Unfortunate Flexelinting

I have tried hard to make value tracking understand the code, but to
no avail. It seems, for example

	assert(n <= 56)

and later
	assert(n > 0)

will just lead to flexelint knowning 1? but not 56 as the limit.

src/fellow_log.c

@@ -3371,6 +3371,9 @@ fellow_log_canfit(const struct fellow_dle entry[], unsigned n)
 
 	AN(n);
 
+	/*lint -e{662} possible out of bounds this is unfortunate, but see no
+	 * way around
+	 */
 	entry += (n - 1);
 	while (n > 0) {
 		if (fellow_log_block_valid_last(entry))